chore: rename decorator to RedundancyRelayDecorator

[crodriguezvega]

Description

closes: #XXXX

---

Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

• Targeted PR against correct branch (see CONTRIBUTING.md)
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[damiannolan]

Thanks @crodriguezvega!

[codecov-commenter]

Codecov Report

Merging #1820 (1602c87) into main (88e4388) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #1820   +/-   ##
=======================================
  Coverage   79.92%   79.92%           
=======================================
  Files         166      166           
  Lines       12439    12439           
=======================================
  Hits         9942     9942           
  Misses       2030     2030           
  Partials      467      467           

Impacted Files	Coverage Δ
modules/core/ante/ante.go	85.00% <100.00%> (ø)

[colin-axner]

Nice work! Thanks for the followup